Anxiety and depression are common human emotion and mood disorders, and their underlying neural mechanisms remain largely unknown. In this project, we plan to use mouse as the model system to study the neural circuits and molecular mechanisms of anxiety and depression, at the levels ranging from molecules to animal behaviors. The first team carries out the cellular physiological studies of animal anxiety and depression. The malfunctions of the serotonin(5-HT) system are related to anxiety, anhedonia, and de...